Вход

вход по аккаунту

Патент USA US3038744

код для вставки на сайт или в блог

Ширина: (aвто)

Высота:

ссылки на документ

адрес страницы документа

адрес полноэкранного варианта

короткий адрес

June 12, 1962
3,038,734
H. c. ELSE
CHUCKS FOR HORIZONTAL WORK-PIECES
Filed July 24, 1961
2 Sheets-Sheet 1
8y
I
wwz/vmp.
f/AQQV c. 5455
MIQZZZM/
ATTOENEVS
June 12, 1962
H. c. ELSE
3,038,734
cnucxs FOR HORIZONTAL WORK-PIECES
Filed July 24, 1961
2 Sheets-Sheet 2
m,
INVENTOR.
H4/QAPV 6. £255
BY
$338,734
Patented June 12, I962
1
2
washer 15 on the upper end of the bolt press the two parts
3,038,734
CHUCKS FOR HURIZUNTAL WURK-PIECES
Harry C. Else, % Machinery Sales tfompany, 1921 Forbes
St., Pittsburgh 19, Pa.
Filed July 24, 1961, Ser. No. 126,088
7 Claims. (Cl. 279-1)
of the frame tightly together. The upper and lower por
tions of the frame may be provided between the swing
to those designed for holding rotating horizontal work
pieces while operations are performed on their projecting
bolt ‘and central opening 4 with a tongue 16 and groove
to maintain lateral alignment of the two parts.
The base portion of each frame projects down between
the rails of the foundation base a short distance, and it also
extends out behind the frame to provide stability and a
support for a pair of bolts 18. These bolts clamp a heavy
bar H against the bottoms of the rails to hold the chuck
ends.
?rmly in place anywhere along the base.
This invention relates to chucks, and more particularly
-
Cast ingots may have their ends cropped by supporting
Rotatably mounted in the base portion of each frame is
a pair of ?anged rollers 21. The rollers have parallel
horizontal axes spaced equidistant from opposite sides of a
chucks to hold an ingot, one near each end. To mount 15 vertical line through the axis of frame opening 4. Direct
the ingot in the chucks it has been necessary to insert it
ly above the axis of the frame opening a third ?anged
endwise into them. That is a rather dif?cult operation,
roller 22 is journaled in the top portion of the frame.
the ingots horizontally in chucks that rotate while a saw
or abrasive cutter does the cropping. It requires two
which requires considerable manipulation of the ingot.
Preferably, this roller is spring pressed downwardly so
If it is desired to crop both ends of the ingot and it has to
that it can compensate for wear of the rollers.
be turned end-for-end to do so, it is necessary first to re
Supported by the three rollers and centered by them in
move the ingot axially from the chucks, turn it around and
the frame opening is a ring 24. The ring supports screws
then re-insert it in them. Of course, this increases the com
25, by which clamping blocks as can be pressed against
a work-piece 27, such as an ingot, for example, extending
through the ring. As shown in FIG. 1, one side of the
plexity of the operation.
It is among the objects of this invention to provide
chucking apparatus which has removable elements. that can
be applied to an ingot or other work-piece before it is in
serted in the chucks, and which permits a work-piece to be
ring preferably has a laterally projecting annular portion
28, in which the screws are threaded at an inclination to
the ring axis. This makes the heads of the screws ac
cessible for turning from one side of the ring. The inner
lowered into the chucks instead of being inserted axially
into them.
ends of the screws engage the clamping blocks but do not
In accordance with this invention each of a pair of 30 have to be permanently connected to them unless desired.
parallel chucks includes a vertical frame that is provided
By adjusting the screws, the work-piece can be held ?rmly
with a horizontal opening through it. The frame has a
by the clamping blocks ‘and centered within the ring. If
stationary base portion and a movable top portion hinged
desired, the opposite side of the ring may also be provided
together on a horizontal ‘axis at one side of the frame open
with a laterally projecting annular portion, longer than
ing in order to permit the frame to be opened and closed.
portion '28, for supporting ‘another set of clamping blocks
The frame normally is held closed by releasable means. A
‘and screws so that a short work-piece can be held at
vertical ring is disposed in the frame opening, from which
axially spaced points by one chuck alone.
it is removable when the frame is opened. The ring is
When it is desired to use this apparatus, nuts 14- are
centered in the closed frame by rollers mounted in the top
loosened and bolts ll} are swung outward so that the tops
and bottom portions of the frame. Clamps connected with 40 of the chuck frames can be swung up‘ and out in order to
the ring center a work-piece in it. The rings and clamps
open the frames. Then the rings 24- are lifted out of the
can be applied to the work-piece before it is placed in the
base portions of the chucks and placed over the opposite
chucks, and then the work-‘piece can be lifted by a ‘crane
ends of a work-piece, such as an ingot 27. Clamping
and deposited in the open chuck frames, where the rings
screws 25 are turned inward far enough to press the clamp
will be supported by the ‘lower rollers. After the ‘frames Hi Ur ing blocks against the work-piece so that the rings will be
are closed, the clamps are adjusted to center the work
held in place the correct distance apart. The work-piece
piece in the rings. The two chucks can be adjusted toward
then may be lifted by a crane and deposited in the open
and away from each other ‘on a foundation base for work
chuck frames, with the rings seating on bottom rollers 21.
pieces of different lengths.
When the frames are closed and locked, upper rollers 22
The preferred embodiment of the invention is illustrat 50 also will engage the rings. The rings are now held by the
ed in the accompanying drawings, in which:
rollers in axal alignment with each other. By making
FIG. 1 is a side view of my apparatus with one of the
Whatever further adjustments of the clamping screws that
chucks partly broken away in vertical section;
are necessary, the axis of the workpiece can be made to
FIG. 2 is a View of the right-hand end of the apparatus;
FIG. 3 is a fragmentary horizontal section taken on the
line TIL-Ill of FIG. 2; and
FIG. 4 is an enlarged fragmentary side view and section
taken on the line lV--IV of FIG. 2.
Referring to the drawings, the top ‘of a heavy founda
tion base 1 may be provided with laterally spaced parallel
rails 2». Seated on these rails is a pair of parallel vertical
chucks. Each chuck has a frame 3 provided with a large '
coincide with the common axis of the rings. The ap
paratus now is ready for use, such as cropping the end of
an ingot. In that case the cropping may be accomplished
by a rotary abrasive cutter 3t) beside one end of the ingot.
To rotate the ingot slowly during cutting, axially aligned
sprockets 32 and 33 are rigidly connected with one of the
lower rollers 21, and a sprocket 34 is rigidly connected
with the ‘other lower sprocket. A chain 35 extends around
sprockets 33 and 34, and sprocket 32 is driven by a chain
horizontal opening 4 through it. The two openings are in
36 from a motor-driven gear reduction unit 37.
axial alignment with each other. Each frame has a base
In case the opposite end of the ingot is to be cropped
portion 6 that is seated upon the foundation base, and a 65 by the same cutter, the chuck frames can be opened and
movable top portion 7 that is hinged to the base portion by
then the ingot and rings lifted as a unit, turned end-for
a horizontal pivot pin 8 at one side of opening 4, about
end and redeposited in the frames. Since the two chucks
half-Way between its top and bottom. The frame normal~
are the same, it will not be necessary to readjust the
ly is held closed by a vertical swing bolt lit disposed in
clamping members.
slots 11 and 12 in the side'of the frame opposite the hinge.
If it is desired to make more than one cut through the
The lower end of the bolt is pivotally mounted on a pin 13
ingot or other work-piece, following each cut the clamp
extending through the base of the frame, and a nut 14 and
ing screws 25 in the front chuck are loosened and the
3,088,734
3
5. Ohucking apparatus comprising a foundation base,
rear chuck is moved forward on the base by any suit
able means to push the work through the front chuck
the desired distance. Then the clamping screws are
tightened again to center the work in ring 24. To sup
port the ingot while the front clamping screws are loose,
and to facilitate its forward movement, it is desirable
to mount a vertically adjustable concave roller 40 be
neath it between the two chucks. This can be done
a pair of parallel chucks mounted on the base, each
chuck including a vertical frame provided with a hori
zontal opening therethrough and having a base portion
secured to said foundation base, means for adjusting one
of the chucks along the foundation base toward and
away from the other, each frame also having a top por
tion hinged at one side to its base portion on a horizon
tal axis to permit the frame to be opened and closed,
by journaling the roller in a bracket 41 mounted on the
upper end of a vertical rod 42 that is slidably mounted 10 releasable means normally holding the frames closed, a
in a cylinder 43 secured to base ‘6 of the front chuck
frame. The rod can be raised in any suitable manner
such as by ?uid pressure in the cylinder. Roller 40 is
vertical ring disposed in each frame opening and re
movable therefrom when the frame is open, rollers
mounted in said top and base portions of the frames
elevated to support the ingot just before the four clamps
are loosened, and is lowered again after the ingot has
been pushed forward and reclamped.
centering the rings in the closed frames and rotatably
supporting them, and clamps inside the rings and con
nected thereto for centering therein a work-piece being
chucked.
6. Chucking apparatus according to claim 5, includ
This apparatus can also be used for internally clamp
ing hollow work-pieces, from which it is desired to cut
rings, by simply extending a ring 24 axially out of a
ing means between the chucks for supporting a Work
piece while said one chuck is being adjusted along the
foundation base and the clamps in the other chuck are
loose.
7. Chucking apparatus comprising a foundation base,
chuck frame and providing its projecting portion with
radially outwardly directed clamps to engage the inner
surface of a hollow work-piece telescoped over the ring
extension.
a pair of parallel chucks mounted on the base, each chuck
I claim:
1. A chuck for a horizontal metal work-piece, com 25 including a vertical frame provided with a horizontal
opening therethrough and having a base portion secured
prising a vertical frame provided with a horizontal open
ing therethrough and having a stationary base portion
to said foundation base, means for adjusting one of the
and a movable top portion hinged together on a hori
chucks along the foundation base toward and away from
zontal axis at one side of said opening to permit the
the other, each frame also having a top portion hinged
frame to be opened and closed, releasable means nor 30 at one side to its base portion on a horizontal axis to
mally holding the frame closed, a vertical ring disposed
in said frame opening and removable therefrom when
permit the frame to be opened and closed, releasable
the frame is open, rollers mounted in said top and base
ring disposed in each frame opening and ‘removable
means normally holding the frames closed, a vertical
portions of the frame centering the ring in the closed
frame and rotatably supporting it, and clamps carried
by the ring for centering a work-piece to it.
2. A chuck according to claim 1, in which there are
only three of said rollers, two of the rollers being mounted
in laterally spaced positions in the base portion of the
35
therefrom when the frame is open, ?anged rollers
mounted in said top and base portions of the frames re
ceiving and centering the rings in the closed frames and
rotatably supporting them on a common axis, clamp
ing blocks inside the rings for engaging a work-piece ex
frame, and one of the rollers being mounted in the top 40 tending through the rings, and screws threaded in the
rings with their inner ends engaging the blocks and their
portion of the frame directly above the axis of said ring.
outer ends exposed for turning.
3. A chuck according to claim 1, in which said roll
ers are ?anged to receive the marginal portion of the
References Cited in the ?le of this patent
ring.
4. A chuck according to claim 1, in which said clamps 45
UNITED STATES PATENTS
include blocks inside the ring, and screws threaded in
599,562
Hurlbut ____________ __ Feb. 22, 1898
the ring, the screws being inclined to the axis of the ring
2,800,867
Smith _______________ __ July 30, 1957
with their inner ends engaging said blocks and their out—
2,985,455
Powell ______________ __ May 23, 1961
er ends projecting from one side of the ring.